I suggest to watch this episode: https://laracasts.com/series/laravel-6-from-scratch/episodes/6
It explain how to retrieve data from the request, which is what you need.
Basically is something like this:
Example url
http://example.com/?page=2
In your controller
public function foo(Request $request) {
dd($request->page); // the value retrieved is 2.
}
or
public function foo(Request $request) {
dd($request->query('page');); // the value retrieved is 2.
}
Documentation: https://laravel.com/docs/7.x/requests#retrieving-input
source: https://stackoverflow.com/questions/15081090/getting-get-variable-in-laravel